Yamaha 2010 XMAX YP125R Service Manual page 443

Fault code No.
Item
Probable cause of malfunction
1 Connections
• Injector coupler
• Wire harness ECU coupler
2 Open or short circuit in wire harness.
3 Defective injector.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
FI diagnostic tool display
Checking method
Probable cause of malfunction
1 Connections
• Lean angle sensor coupler
• Wire harness ECU coupler
2 Open or short circuit in wire harness.
3 Defective lean angle sensor.
Reinstatement method
39
Injector: open or short circuit detected.
• Check the couplers for any pins that may be
pulled out.
• Check the locking condition of the couplers.
• If there is a malfunction, repair it and connect
the coupler securely.
• Repair or replace if there is an open or short
circuit.
• Between injector coupler and ECU coupler.
(red/black–red/black)
(orange/black–orange/black)
• Execute the diagnostic mode. (Code No. 36)
• Replace if defective.
Refer to "CHECKING THE FUEL INJECTOR"
on page 7-9.
Cranking the engine. (Connect the fuel injector coupler.)
41
Lean angle sensor: open or short circuit detected.
Unable to start engine
Unable to drive vehicle
08
Lean angle sensor
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Remove the lean angle sensor and incline it more than 45 de-
grees.
• Check the coupler for any pins that may be
pulled out.
• Check the locking condition of the coupler.
• If there is a malfunction, repair it and connect
the coupler securely.
• Repair or replace if there is an open or short
circuit.
• Between lean angle sensor coupler and ECU
coupler.
(gray/red–gray/red)
(yellow/green–yellow/green)
(gray/black–gray/black)
• Execute the diagnostic mode. (Code No. 08)
• Replace if defective.
Refer to "CHECKING THE LEAN ANGLE
SENSOR" on page 8-84.
Turning the main switch to "ON".
8-46
FUEL INJECTION SYSTEM
Check or maintenance job
Check or maintenance job